*,
*:after,
*:before {
    box-sizing: border-box;
}

html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video,
input {
    margin: 0;
    padding: 0;
    border: none;
    outline: 0;
    font-family: STHeitiSC-Light;
    font: inherit;
    vertical-align: baseline;
}

html,
body,
form,
fieldset,
p,
div,
h1,
h2,
h3,
h4,
h5,
h6 {
    -webkit-text-size-adjust: none;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}

body {
    font-family: arial, sans-serif;
}

ol,
ul {
    list-style: none;
}

blockquote,
q {
    quotes: none;
}

blockquote:before,
blockquote:after,
q:before,
q:after {
    content: '';
    content: none;
}

ins,
a {
    text-decoration: none;
}

del {
    text-decoration: line-through;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

img {
    display: inline-block;
}

input,
textarea {
    border: none;
    background: none;
    outline: none;
    -webkit-appearance: none;
}

* {
    -webkit-tap-highlight-color: transparent;
    -moz-tap-highlight-color: transparent;
    -ms-tap-highlight-color: transparent;
    -o-tap-highlight-color: transparent;
}

@mixin wh($w, $h, $bk) {
    width: $w;
    height: $h;
    background: $bk;
}

.html {
    overflow: hidden;
}

.A {
    @include wh(100%, 100%, 0);
    display: flex;
    flex-direction: column;
}

header {
    @include wh(100%, 40px, #1d1d28);
    display: flex;
    color: white;
    justify-content: space-between;
    align-items: center;
}

section {
    @include wh(100%, 125px, #1d1d28);
    display: flex;
    justify-content: center;
    align-items: center;
    img {
        height: 50%;
    }
}

footer {
    @include wh(100%, 55px, #1d1d28);
    display: flex;
    p {
        @include wh(50%, 55px, #1d1d28);
        text-align: center;
        border-right: 1px dotted #c7cad4;
        a {
            color: white;
            font-size: 16px;
        }
        i {
            display: block;
            font-size: 26px;
            color: white;
        }
    }
}

.B {
    width: 100%;
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 0 35px;
    margin-top: 20px;
    input {
        border-bottom: 1px solid #cccc;
        height: 45px;
        margin-top: 30px;
    }
    button {
        width: 290px;
        height: 45px;
        background: #2cbb5d;
        border-radius: 25px;
        outline: 0;
        display: block;
        margin: 0 auto;
        margin-top: 30px;
        color: white;
        border: none;
    }
    p {
        display: flex;
        justify-content: space-between;
        padding-top: 15px;
        a {
            color: #c7cad4;
        }
    }
}